Alexis Morin, 23, Catharine Bellinger, 23

Cofounders, Students for Education Reform

Founded SFER while they were undergraduates at Princeton in 2009. Bellinger and Morin (left) set out to mobilize college students to advocate for K-12 education reform in the voting booth and in state capitols, a mission that has grown to more than 100 chapters on campuses across the country and reaching over a million college students. SFER is scaling so quickly that the founders put their own educations on hold after their junior year and are scheduled to graduate in 2015.